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How can I slow down a 12v water pump?

Jan 14, 2012 by | Posted in Engineering

I have a 4 litres per coup d'oeil 80psi water pump with a pressure switch, connected to a car battery. It says 6amps on the pump. I need to be capable to slow it down to different speeds so it puts out less water . I thought of a flow regulator but i

The cheapest way is to put a power resistor in series. But that only gives you one scurry, and the resistor is large and gets hot. A 2 ohm 20 watt resistor would cut the voltage about in half.

A PWM celerity controller is expensive but

12 Volt Water Pump at just 6 Watts.

A curt look at the Solarproject 12Volt 6 Watt water pump, ideal for solar water heating and many other uses. If the useful is poor on this then I ...